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Restoring form and function: The role of free dermal fat graft (FDFG) in post-parotidectomy reconstruction. A systematic review and meta-analysis of expected outcomes and patient satisfaction. 恢复形态和功能:游离真皮脂肪移植(FDFG)在腮腺切除术后重建中的作用。对预期效果和患者满意度的系统回顾和荟萃分析。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-20 DOI: 10.1016/j.jormas.2024.102162
Evangelos N Vitkos, Nefeli Eleni Kounatidou, Christos Tsilivigkos, Konstantinos Kotzagiorgis, Athanassios Kyrgidis, Lars Bonitz, Ákos Bicsák, Stefan Haßfeld, Christian Soemmer

Purpose: This study aims to assess the outcomes of free dermal fat graft (FDFG) reconstruction following parotidectomy, evaluating both clinical complications and patient satisfaction with the procedure.

Methods: We conducted a systematic review and meta-analysis according to PRISMA guidelines, searching MEDLINE (via PubMed), Scopus, and the Cochrane Library for studies reporting on FDFG outcomes post-parotidectomy. Eligible studies included single-arm studies with data on recipient and donor site complications as well as patient satisfaction. Pooled complication rates were analyzed using a random-effects model to account for study heterogeneity.

Results: A total of 20 studies, representing 922 reconstructions in 919 patients, were included in the analysis. The overall rates of recipient site complications were low, with hematoma observed in 1.31% (95% CI: 0.50-3.34) and infection in 1.84% (95% CI: 0.95-3.53) of cases. The incidence of Frey's syndrome was 1.95% (95% CI: 0.74-5.02), and fat necrosis was noted in 1.74% (95% CI: 0.57-5.23) of patients. Donor site complications were minimal, with hematoma, infection, and seroma rates each below 1%. While there was high variability in satisfaction measures, results indicated favorable patient satisfaction with FDFG outcomes.

Conclusion: FDFG reconstruction following parotidectomy is a safe and effective method for correcting contour deformities, showing minimal complications and high patient satisfaction. The low incidence of complications, including Frey's syndrome, underscores FDFG as a viable option for facial contour restoration in parotid surgery, providing favorable aesthetic and functional outcomes.

目的:本研究旨在评估腮腺切除术后游离真皮脂肪移植(FDFG)重建的效果,同时评估临床并发症和患者对手术的满意度:我们根据PRISMA指南进行了系统性回顾和荟萃分析,检索了MEDLINE(通过PubMed)、Scopus和Cochrane图书馆中有关腮腺切除术后游离真皮脂肪移植效果的研究报告。符合条件的研究包括具有受体和供体部位并发症以及患者满意度数据的单臂研究。采用随机效应模型对汇总的并发症发生率进行分析,以考虑研究的异质性:共有20项研究被纳入分析,代表了919名患者的922次重建。受体部位并发症的总体发生率较低,血肿发生率为1.31%(95% CI:0.50-3.34),感染发生率为1.84%(95% CI:0.95-3.53)。弗雷氏综合征的发生率为 1.95% (95% CI: 0.74-5.02),1.74%(95% CI:0.57-5.23)的患者出现脂肪坏死。供体部位并发症极少,血肿、感染和血清肿的发生率均低于 1%。虽然满意度的测量结果差异很大,但结果显示患者对FDFG的效果非常满意:结论:腮腺切除术后的FDFG重建是一种安全有效的轮廓畸形矫正方法,并发症少,患者满意度高。包括 Frey's 综合征在内的并发症发生率很低,这突出表明 FDFG 是腮腺手术中面部轮廓修复的一种可行方法,可提供良好的美学和功能效果。
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引用次数: 0
Does the type of cleft have an impact on language results? Validation of the Nasalance test in French. 裂隙类型对语言成绩有影响吗?法语鼻平衡测试的验证。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-19 DOI: 10.1016/j.jormas.2024.102159
Astrid Richard, Serena Brontoladi, Estelle Sanquer, Cécile Chapuis-Vandenbogaerde, Alexandra Bucur, Valérie Charpillet, Véronique Soupre, Arnaud Picard, Natacha Kadlub

Objectives: The nasometer is the most widely used tool for objective assessment of phonation in both research and clinical practice. French standards have been validated in cases of total cleft lip and palate. The objective of this research is to propose a second validation study on velopalatal clefts. The 15 most sensitive and specific items from the initial validation were selected to create a test that is suitable for use in a clinical setting. A secondary objective is to ascertain the impact of cleft type on nasometry.

Methods: A total of 39 participants with an isolated or non-isolated velopalatal cleft were recruited for the study. A speech therapist conducted a blinded subjective evaluation of phonation. The nasometric assessment was based on a corpus developed in collaboration with the CNRS Phonetics and Phonology Laboratory. The corpus is composed of items that are phonetically balanced.

Results: The obtained nasalance threshold values ranged from 11 to 40%. The study corroborated the existence of a voicing effect, whereby the articulation of voiced consonants was associated with a higher nasalance score. This effect, not previously observed in other studies, is specific to French phonetics. Participants with a velopalatal cleft exhibited higher nasalance scores compared to those with a total cleft.

Conclusion: By validating the most relevant stimuli, a French Nasalance Test can be established. With a view to harmonising assessment protocols, it would be appropriate to use the items from this test in subjective assessment.

目的:鼻腔测量仪是研究和临床实践中最广泛使用的客观发音评估工具。法国标准已在全唇腭裂病例中得到验证。本研究的目的是对发育性腭裂进行第二次验证研究。我们从首次验证中选出了 15 个最敏感、最特异的项目,以创建一个适合在临床环境中使用的测试。次要目标是确定裂隙类型对鼻测量的影响:方法:共招募了 39 名患有孤立性或非孤立性发育性腭裂的参与者进行研究。语言治疗师对发音进行盲法主观评估。鼻音测量评估基于与法国国家科学研究中心语音学和音韵学实验室合作开发的语料库。该语料库由语音平衡的项目组成:结果:获得的鼻音平衡阈值在 11% 到 40% 之间。研究证实了发声效应的存在,即发声辅音的发音与较高的鼻音得分相关。这种效应以前未在其他研究中观察到,是法语语音学特有的。与完全唇裂的受试者相比,有脑下裂的受试者表现出更高的鼻音得分:结论:通过验证最相关的刺激物,可以建立法语鼻平衡测试。结论:通过验证最相关的刺激,可以建立一个法语鼻平衡测试,为了统一评估方案,在主观评估中使用该测试的项目是合适的。
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引用次数: 0
Maxillary rehabilitation after zygomatic implant sequelae using custom subperiosteal implants: A case study. 使用定制的骨膜下种植体进行颧骨种植后遗症的上颌康复治疗:病例研究。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-17 DOI: 10.1016/j.jormas.2024.102154
Frederico Rodger Gomes Rodrigues Cardoso, Ricardo Grillo

Despite technological advancements, maxillary rehabilitation remains a significant challenge in Oral and Maxillofacial Surgery. This paper presents the case of a patient who underwent multiple previous procedures for prosthetic rehabilitation without achieving the desired results. The most recent intervention, which resulted in some sequelae, involved the placement of bilateral zygomatic implants. After unsuccessful attempts to maintain these implants, the decision was made to remove them and place a custom subperiosteal implant, produced via additive manufacturing. The patient has now been successfully rehabilitated with these implants for over a year, with no complaints and a notable improvement in her quality of life. The rehabilitation of severely atrophic maxillae using custom subperiosteal implants has proven to be an excellent alternative, offering predictability, the possibility of virtual planning and simulation, and the ability to rehabilitate extensive bone defects.

尽管技术在不断进步,但上颌修复仍然是口腔颌面外科面临的一项重大挑战。本文介绍了一名患者的病例,该患者之前接受过多次修复手术,但都没有达到预期效果。最近的一次手术是植入双侧颧骨种植体,但却造成了一些后遗症。在尝试维护这些植入物未果后,医生决定将其取出,并植入通过快速成型技术生产的定制骨膜下植入物。现在,患者已经成功地使用这些植入体进行了一年多的康复治疗,没有任何不适,生活质量也得到了明显改善。事实证明,使用定制的骨膜下种植体对严重萎缩的上颌骨进行修复是一种很好的选择,它具有可预测性、虚拟规划和模拟的可能性,以及修复大面积骨缺损的能力。
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引用次数: 0
Biomechanical analysis of teeth movement during the repair of mandibular defects using transport disk distraction osteogenesis. 利用运输盘牵引成骨技术修复下颌骨缺损时牙齿移动的生物力学分析。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-17 DOI: 10.1016/j.jormas.2024.102147
Yuzhuan Hou, Xuetong Zhang, Juan Wang, Liang Zhao

Introduction: Teeth movement or rotation is one of the complications of mandibular defect repair using transport disk distraction osteogenesis (TDDO). However, the mechanical reasons are not clearly understood.

Material and methods: To evaluate the biomechanical factors associated with teeth movements during mandibular defect repair with TDDO, a finite element model created from computed tomographic images of the human mandible was adopted to evaluate teeth displacement and the Von Mises stress distribution on the periodontal ligament resulting from the transport disk for teeth subjected to TDDO loading.

Results: Under a displacement of 0.5 mm to the fixed arm of the transport disk, the teeth on the disk moved away from the distraction. The stress on the periodontal ligament was highest (60 KPa) around the distal neck. Upon the application of 150 g of resistance, the entire tooth moved in the same direction and the isoline gradient was almost parallel to the long axis of the tooth. Although the stress was distributed similarly; it decreased to 0.117 KPa geometrically.

Discussion: When mandibular defects are repaired with TDDO, the transport disk and anti-distraction forces contribute to the reversal movement or rotation of the teeth, which may become immobility when antagonistic forces are applied in the same direction.

简介:牙齿移动或旋转是使用运输盘牵引成骨(TDDO)修复下颌缺损的并发症之一。然而,其力学原因尚不清楚:为了评估在使用 TDDO 进行下颌骨缺损修复时与牙齿移动相关的生物力学因素,我们采用了一个根据人体下颌骨计算机断层扫描图像创建的有限元模型,以评估牙齿位移以及在承受 TDDO 负载的牙齿上,运输盘导致的牙周韧带上的 Von Mises 应力分布:在运输盘固定臂位移 0.5 毫米的情况下,运输盘上的牙齿远离牵引力。牙周韧带上的应力在远端颈部周围最大(60 千帕)。施加 150 克阻力时,整个牙齿向同一方向移动,隔离线梯度几乎与牙齿长轴平行。虽然应力分布相似,但从几何角度看,应力下降到了 0.117 KPa:讨论:用 TDDO 修复下颌缺损时,运输盘和抗牵引力有助于牙齿的反向运动或旋转,当在同一方向施加拮抗力时,牙齿可能无法移动。
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引用次数: 0
Is autoimmunity associated with the development of premalignant oral conditions and the progression to oral squamous cell carcinoma?: A literature review. 自身免疫是否与口腔癌前病变的发展及口腔鳞状细胞癌的进展有关?文献综述。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-17 DOI: 10.1016/j.jormas.2024.102139
Jeong-Hyun Kang, Seok Woo Hong

Objective: Oral potentially malignant disorders (OPMDs) are oral mucosal conditions that may progress to oral squamous cell carcinoma (OSCC). Although autoimmunity has linked to the malignant transformation potential of various precancerous conditions, its role in OPMD remains unclear. This review aimed to identify the role of systemic autoimmunity on OPMD development and their progression to OSCC.

Methods: A comprehensive literature search was conducted using PubMed, Cochrane CENTRAL, and SCOPUS database for articles published up to January 2024. The key questions addressed by this review were "Is autoimmunity associated with the development of OPMD" and "How does systemic autoimmunity influence the potential for malignant transformation of OPMD?". This review followed the PRISMA guidelines for scoping reviews (PRISMA-ScR).

Results: Of the 1265 articles initially identified, 21 fulfilled the search criteria. Three themes were emerged; 1) the prevalence and prognosis of oral cancers in patients with systemic autoimmune diseases, 2) circulating autoantibodies in OPMD patients, and 3) autoimmune-related markers linked to malignant transformation in OPMD patients. This review indicated that systemic autoimmunity may contribute to chronic inflammatory conditions, disruption of oral mucosal integrity, and interference with the DNA damage repair process, thus influencing malignant transformation in the oral epithelium of patients with OPMD.

Conclusion: The co-occurrence of OPMD with circulating autoantibodies or systemic autoimmune diseases underscores the importance of understanding these interactions for improved management of OPMD and early detection of OSCC.

目的:口腔潜在恶性疾病(OPMD)是一种可能发展为口腔鳞状细胞癌(OSCC)的口腔黏膜疾病。虽然自身免疫与各种癌前病变的恶性转化潜能有关,但其在口腔潜在恶性疾病中的作用仍不明确。本综述旨在确定系统性自身免疫对OPMD发展及其向OSCC进展的作用:方法:使用PubMed、Cochrane CENTRAL和SCOPUS数据库对截至2024年1月发表的文章进行了全面的文献检索。本综述探讨的关键问题是 "自身免疫是否与OPMD的发展有关 "以及 "全身性自身免疫如何影响OPMD恶性转化的可能性?本综述遵循了PRISMA范围界定综述指南(PRISMA-ScR):在初步确定的 1265 篇文章中,有 21 篇符合检索标准。结果:在最初确定的 1265 篇文章中,有 21 篇符合检索标准,其中有三个主题:1)全身性自身免疫性疾病患者口腔癌的发病率和预后;2)OPMD 患者的循环自身抗体;3)与 OPMD 患者恶性转化相关的自身免疫相关标记物。这篇综述指出,系统性自身免疫可能会导致慢性炎症、口腔黏膜完整性受到破坏、DNA损伤修复过程受到干扰,从而影响OPMD患者口腔上皮的恶性转化:结论:OPMD与循环自身抗体或全身自身免疫性疾病同时存在,这突显了了解这些相互作用对于改善OPMD的管理和早期发现OSCC的重要性。
{"title":"Is autoimmunity associated with the development of premalignant oral conditions and the progression to oral squamous cell carcinoma?: A literature review.","authors":"Jeong-Hyun Kang, Seok Woo Hong","doi":"10.1016/j.jormas.2024.102139","DOIUrl":"10.1016/j.jormas.2024.102139","url":null,"abstract":"<p><strong>Objective: </strong>Oral potentially malignant disorders (OPMDs) are oral mucosal conditions that may progress to oral squamous cell carcinoma (OSCC). Although autoimmunity has linked to the malignant transformation potential of various precancerous conditions, its role in OPMD remains unclear. This review aimed to identify the role of systemic autoimmunity on OPMD development and their progression to OSCC.</p><p><strong>Methods: </strong>A comprehensive literature search was conducted using PubMed, Cochrane CENTRAL, and SCOPUS database for articles published up to January 2024. The key questions addressed by this review were \"Is autoimmunity associated with the development of OPMD\" and \"How does systemic autoimmunity influence the potential for malignant transformation of OPMD?\". This review followed the PRISMA guidelines for scoping reviews (PRISMA-ScR).</p><p><strong>Results: </strong>Of the 1265 articles initially identified, 21 fulfilled the search criteria. Three themes were emerged; 1) the prevalence and prognosis of oral cancers in patients with systemic autoimmune diseases, 2) circulating autoantibodies in OPMD patients, and 3) autoimmune-related markers linked to malignant transformation in OPMD patients. This review indicated that systemic autoimmunity may contribute to chronic inflammatory conditions, disruption of oral mucosal integrity, and interference with the DNA damage repair process, thus influencing malignant transformation in the oral epithelium of patients with OPMD.</p><p><strong>Conclusion: </strong>The co-occurrence of OPMD with circulating autoantibodies or systemic autoimmune diseases underscores the importance of understanding these interactions for improved management of OPMD and early detection of OSCC.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102139"},"PeriodicalIF":2.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142677750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Volatile sulfur compounds and salivary parameters in patients undergoing head and neck cancer treatment: A preliminary study. 头颈癌治疗患者的挥发性硫化合物和唾液参数:一项初步研究。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-17 DOI: 10.1016/j.jormas.2024.102158
Juliana Maria Braga Sclauser, Karolina Skarlet Silva Viana, José Alcides Almeida de Arruda, Alessandro Oliveira de Jesus, Meiriane Cristina Faria Soares Lima, Arnoldo Mafra, Lucas Guimarães Abreu, Patrícia Carlos Caldeira, Ricardo Alves Mesquita, Tânia Mara Pimenta Amaral

Background: Treatment for head and neck squamous cell carcinoma (HNSCC) is often associated with various adverse effects, including changes in salivary parameters and complaints of halitosis. This study aimed to investigate changes in volatile sulfur compound (VSC) levels and salivary parameters in patients undergoing treatment for HNSCC.

Methods: This prospective longitudinal study was conducted at a Brazilian oncology center, where a convenience sample of 24 HNSCC patients undergoing radiotherapy or chemoradiotherapy were evaluated for VSC levels, salivary flow, pH, viscosity, dry mouth, and tongue coating. Assessments were performed at the beginning and end of antineoplastic therapy. VSC levels were measured using an Oral Chroma™ gas chromatograph. Data were analyzed descriptively and analytically.

Results: No significant changes were found in overall VSC levels. However, a statistically significant reduction in salivary flow (p < 0.001) and pH (p = 0.017) and an increase in salivary viscosity (p = 0.037) were noted post-treatment. Patients who reported halitosis after treatment exhibited significantly higher hydrogen sulfide levels (p = 0.045). Tongue coating and VSC levels showed no significant changes.

Conclusion: Treatment for HNSCC results in reduced salivary flow, altered pH, and increased salivary viscosity. Although self-reported halitosis correlates with elevated hydrogen sulfide levels post-treatment, no significant changes in overall VSC concentrations were observed.

背景:头颈部鳞状细胞癌(HNSCC)的治疗通常会产生各种不良反应,包括唾液参数变化和口臭。本研究旨在调查接受 HNSCC 治疗的患者体内挥发性硫化合物(VSC)水平和唾液参数的变化:这项前瞻性纵向研究在巴西一家肿瘤中心进行,方便抽样调查了 24 名正在接受放疗或化疗的 HNSCC 患者,评估了他们的 VSC 水平、唾液流量、pH 值、粘度、口干和舌苔。评估在抗肿瘤治疗开始和结束时进行。使用口腔 ChromaTM 气相色谱仪测量 VSC 水平。对数据进行了描述性和分析性分析:结果:总体 VSC 水平未发现明显变化。结论:HNSCC 的治疗会导致唾液流量减少:HNSCC治疗会导致唾液流量减少、pH值改变和唾液粘度增加。虽然自我报告的口臭与治疗后硫化氢水平升高有关,但未观察到整体 VSC 浓度有明显变化。
{"title":"Volatile sulfur compounds and salivary parameters in patients undergoing head and neck cancer treatment: A preliminary study.","authors":"Juliana Maria Braga Sclauser, Karolina Skarlet Silva Viana, José Alcides Almeida de Arruda, Alessandro Oliveira de Jesus, Meiriane Cristina Faria Soares Lima, Arnoldo Mafra, Lucas Guimarães Abreu, Patrícia Carlos Caldeira, Ricardo Alves Mesquita, Tânia Mara Pimenta Amaral","doi":"10.1016/j.jormas.2024.102158","DOIUrl":"10.1016/j.jormas.2024.102158","url":null,"abstract":"<p><strong>Background: </strong>Treatment for head and neck squamous cell carcinoma (HNSCC) is often associated with various adverse effects, including changes in salivary parameters and complaints of halitosis. This study aimed to investigate changes in volatile sulfur compound (VSC) levels and salivary parameters in patients undergoing treatment for HNSCC.</p><p><strong>Methods: </strong>This prospective longitudinal study was conducted at a Brazilian oncology center, where a convenience sample of 24 HNSCC patients undergoing radiotherapy or chemoradiotherapy were evaluated for VSC levels, salivary flow, pH, viscosity, dry mouth, and tongue coating. Assessments were performed at the beginning and end of antineoplastic therapy. VSC levels were measured using an Oral Chroma™ gas chromatograph. Data were analyzed descriptively and analytically.</p><p><strong>Results: </strong>No significant changes were found in overall VSC levels. However, a statistically significant reduction in salivary flow (p < 0.001) and pH (p = 0.017) and an increase in salivary viscosity (p = 0.037) were noted post-treatment. Patients who reported halitosis after treatment exhibited significantly higher hydrogen sulfide levels (p = 0.045). Tongue coating and VSC levels showed no significant changes.</p><p><strong>Conclusion: </strong>Treatment for HNSCC results in reduced salivary flow, altered pH, and increased salivary viscosity. Although self-reported halitosis correlates with elevated hydrogen sulfide levels post-treatment, no significant changes in overall VSC concentrations were observed.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102158"},"PeriodicalIF":2.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An artificial intelligence mechanism for detecting cystic lesions on CBCT images using deep learning. 利用深度学习在 CBCT 图像上检测囊性病变的人工智能机制。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-17 DOI: 10.1016/j.jormas.2024.102152
Rasool Esmaeilyfard, Nasim Esmaeeli, Maryam Paknahad

Introduction: The present study aimed to provide and evaluate the efficiency of an artificial intelligence mechanism for detecting cystic lesions on cone beam computed tomography (CBCT) scans.

Method and materials: The CBCT image dataset consisted of 150 samples, including 50 cases without lesions, 50 dentigerous cysts (DC), and 50 periapical cysts (PC) based on both radiographic and histopathological diagnosis. The dataset was divided into a development set with 70 % of samples for training and validation and a final test set with the other 30 % of samples. Four images were obtained for each case, including panoramic, manually segmented panoramic, axial, and manually segmented axial images. A deep convolutional neural network (CNN) architecture was used for automatic lesion detection and diagnosing the type of cystic lesion. To increase the number of image samples and avoid overfitting, a data augmentation procedure was applied. Recall, precision, F1-score, and average precision (AP) values were measured for lesion detection performance, and sensitivity, specificity, and accuracy indicators from the confusion matrix were calculated for the lesion classification performance of the CNN model.

Results: Mean average precision, recall, and F1-score for the detection of DCs and PCs were respectively, 0.87, 0.92, and 0.89 before data augmentation, and 0.93, 0.95, and 0.93, after the augmentation process. For the classification of DCs with data augmentation, sensitivity, specificity, accuracy, and AUC values were 96.4 %, 99.5 %, 97.3 %, and 0.98, respectively, and for PCs with augmentation, these values were 89.6 %, 98.9 %, 98.1 %, and 0.94, respectively. Lastly, for no lesion samples, sensitivity, specificity, accuracy, and AUC values were 100 %, 99.1 %, 99.4 %, and 0.99, respectively, by application of data augmentation.

Conclusion: Our developed deep learning-based CNN algorithm showed high accuracy, sensitivity, and precision values (more than 90 %) for detecting and classifying dentigerous and periapical cysts on CBCT images using data augmentation.

导言本研究旨在提供并评估人工智能机制在锥形束计算机断层扫描(CBCT)中检测囊性病变的效率:CBCT 图像数据集由 150 个样本组成,包括 50 个无病变病例、50 个齿槽囊肿 (DC) 和 50 个根尖周囊肿 (PC)。数据集分为开发集和最终测试集,前者有 70% 的样本用于训练和验证,后者有 30% 的样本用于训练和验证。每个病例获得四幅图像,包括全景图像、手动分割的全景图像、轴向图像和手动分割的轴向图像。深度卷积神经网络(CNN)架构用于自动检测病变和诊断囊性病变的类型。为了增加图像样本的数量并避免过度拟合,采用了数据增强程序。对病变检测性能的召回率、精确度、F1-分数和平均精确度(AP)值进行了测量,对 CNN 模型的病变分类性能的灵敏度、特异度和准确度指标的混淆矩阵进行了计算:结果:数据增强前,DC 和 PC 检测的平均精确度、召回率和 F1 分数分别为 0.87、0.92 和 0.89,增强后分别为 0.93、0.95 和 0.93。对于经过数据增强的 DC 分类,灵敏度、特异性、准确性和 AUC 值分别为 96.4%、99.5%、97.3% 和 0.98,而对于经过增强的 PC,这些值分别为 89.6%、98.9%、98.1% 和 0.94。最后,对于无病变样本,应用数据增强后的灵敏度、特异性、准确性和AUC值分别为100%、99.1%、99.4%和0.99:我们开发的基于深度学习的 CNN 算法在使用数据增强技术检测 CBCT 图像上的齿状囊肿和根尖周囊肿并对其进行分类方面表现出了较高的准确性、灵敏度和精确度(超过 90%)。
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引用次数: 0
Comment on "SAPHO syndrome in the mandible: a 17-patient-based experience". 就 "下颌骨 SAPHO 综合征:基于 17 位患者的经验 "发表评论。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-16 DOI: 10.1016/j.jormas.2024.102142
Han Huang, Yi He, Jing Wang, Xiaojun Shi, Zhenhua Ying, Shaobiao Pan, Chen Li
{"title":"Comment on \"SAPHO syndrome in the mandible: a 17-patient-based experience\".","authors":"Han Huang, Yi He, Jing Wang, Xiaojun Shi, Zhenhua Ying, Shaobiao Pan, Chen Li","doi":"10.1016/j.jormas.2024.102142","DOIUrl":"10.1016/j.jormas.2024.102142","url":null,"abstract":"","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102142"},"PeriodicalIF":2.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the biomechanical effects and stability of titanium and carbon fiber-reinforced polyetheretherketone mini plates in Le Fort I advancement osteotomy fixation using finite element analysis. 利用有限元分析评估钛和碳纤维增强聚醚醚酮迷你钢板在 Le Fort I 型推进截骨固定中的生物力学效应和稳定性。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-15 DOI: 10.1016/j.jormas.2024.102153
Kübra Yakut, Sezai Çiftçi

Aim: This study aimed to investigate the biomechanical properties of 60 % carbon fiber-reinforced polyetheretherketone (Cfr-PEEK), which exhibits high mechanical strength and can address the limitations of titanium mini plates used in Le Fort I osteotomy.

Material and method: Models were created using the FEA method based on tomography images of adult individuals. A 5 mm maxillary advancement was applied to the models following Le Fort I osteotomy. Mini plates made of titanium and 60 % Cfr-PEEK were used. Support was provided by the nasomaxillary and zygomaticomaxillary buttresses to fix a total of four l-shaped mini plates. Oblique loads of 125 N, directed from palatal to buccal, and a total of 250 N compression loads were applied to the central fossa of the premolar and molar teeth in the maxillary model at a 30° angle relative to the long axis of the teeth. Displacement values at the osteotomy line, Von Mises stresses in the mini plate-screws, and principal stresses in the bone were compared.

Results: Examination of stress values in the fixation systems of the models revealed higher stress values in the Cfr-PEEK model compared to the titanium model. However, these stresses did not reach levels that would deform the Cfr-PEEK fixation systems. Stress and displacement values in the bone were lower in the Cfr-PEEK model compared to the titanium model.

Conclusion: According to the findings of our study, Cfr-PEEK represents a viable alternative to titanium for mini plate material in Le Fort I osteotomy, offering biomechanical advantages.

目的:本研究旨在探讨60%碳纤维增强聚醚醚酮(Cfr-PEEK)的生物力学特性,该材料具有较高的机械强度,可解决勒堡I型截骨术中使用的钛迷你板的局限性:根据成人的断层扫描图像,使用有限元分析法创建模型。在 Le Fort I 型截骨术后,对模型进行 5 毫米的上颌骨前移。使用了由钛和 60% Cfr-PEEK 制成的迷你板。鼻颌托和颧颌托提供了支撑,共固定了四块 L 形迷你板。从腭侧到颊侧施加 125 牛顿的斜向载荷,并在上颌模型的前磨牙和磨牙中心窝施加总计 250 牛顿的压缩载荷,与牙齿长轴成 30° 角。比较了截骨线处的位移值、微型板状螺钉中的 Von Mises 应力和骨中的主应力:结果:对模型固定系统应力值的检查显示,Cfr-PEEK 模型的应力值高于钛模型。然而,这些应力并未达到导致 Cfr-PEEK 固定系统变形的水平。与钛模型相比,Cfr-PEEK 模型中骨骼的应力和位移值较低:根据我们的研究结果,在 Le Fort I 截骨术中,Cfr-PEEK 是钛迷你钢板材料的可行替代品,具有生物力学优势。
{"title":"Evaluation of the biomechanical effects and stability of titanium and carbon fiber-reinforced polyetheretherketone mini plates in Le Fort I advancement osteotomy fixation using finite element analysis.","authors":"Kübra Yakut, Sezai Çiftçi","doi":"10.1016/j.jormas.2024.102153","DOIUrl":"10.1016/j.jormas.2024.102153","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to investigate the biomechanical properties of 60 % carbon fiber-reinforced polyetheretherketone (Cfr-PEEK), which exhibits high mechanical strength and can address the limitations of titanium mini plates used in Le Fort I osteotomy.</p><p><strong>Material and method: </strong>Models were created using the FEA method based on tomography images of adult individuals. A 5 mm maxillary advancement was applied to the models following Le Fort I osteotomy. Mini plates made of titanium and 60 % Cfr-PEEK were used. Support was provided by the nasomaxillary and zygomaticomaxillary buttresses to fix a total of four l-shaped mini plates. Oblique loads of 125 N, directed from palatal to buccal, and a total of 250 N compression loads were applied to the central fossa of the premolar and molar teeth in the maxillary model at a 30° angle relative to the long axis of the teeth. Displacement values at the osteotomy line, Von Mises stresses in the mini plate-screws, and principal stresses in the bone were compared.</p><p><strong>Results: </strong>Examination of stress values in the fixation systems of the models revealed higher stress values in the Cfr-PEEK model compared to the titanium model. However, these stresses did not reach levels that would deform the Cfr-PEEK fixation systems. Stress and displacement values in the bone were lower in the Cfr-PEEK model compared to the titanium model.</p><p><strong>Conclusion: </strong>According to the findings of our study, Cfr-PEEK represents a viable alternative to titanium for mini plate material in Le Fort I osteotomy, offering biomechanical advantages.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102153"},"PeriodicalIF":2.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of zinc or copper supplementation on the efficacy and sustainability of botulinum toxin A "Botox" injection in masseter muscle of albino rats. 补充锌或铜对注射 A 型肉毒毒素 "Botox "在白化大鼠咀嚼肌上的疗效和持续性的影响。
IF 2.2 3区 医学 Q2 Dentistry Pub Date : 2024-11-15 DOI: 10.1016/j.jormas.2024.102156
Yasmin Saad Elgendy, Sanaa Elzoghby, Nermeen AbuBakr

Objectives: This study aimed to evaluate whether oral zinc or copper supplementation affected the efficacy and sustainability of botulinum toxin-A (BTX-A) injection in masseter muscle of albino rats.

Materials and methods: 32 adult male albino rats were allocated equally into four groups: group I (control), group II received 10U BTX-A injection, group III received 10U BTX-A injection + zinc (1 mg, 4 days pre-injection), and group IV received 10U BTX-A injection + copper (0.04 mg, 7 days post-injection). Rats were euthanized at 2 and 12 weeks (4 rats per subgroup) after injection. The masseter muscle was examined via histological, histochemical, histomorphometrical and real-time polymerase chain reaction (qRT-PCR) analyses.

Results: The histopathological results of the BTX-A group showed atrophied muscle fibers with increased atrophy with time compared to the control group. The BTX-A + zinc group displayed more atrophy compared to BTX-A group. Conversely, the BTX-A + copper group demonstrated improved histology of muscle fibers compared to BTX-A and BTX-A + zinc groups. Histomorphometric analysis of Masson trichrome staining at 2 and 12 weeks revealed that collagen area percentage was the highest in the BTX-A + copper and control groups, followed by BTX-A and BTX-A + zinc groups. At 12 weeks, the nuclear factor kappa beta (NF-κB) mRNA expression was significantly higher in BTX-A + zinc and BTX-A groups compared to BTX-A + copper group and relative to the control group.

Conclusion: Zinc supplementation significantly improved the effectiveness and durability of BTX-A, whereas copper supplementation reduced its efficacy.

研究目的材料与方法:32 只成年雄性白化大鼠平均分为四组:I 组(对照组)、II 组接受 10U BTX-A 注射液、III 组接受 10U BTX-A 注射液 + 锌(1 毫克,注射前 4 天)、IV 组接受 10U BTX-A 注射液 + 铜(0.04 毫克,注射后 7 天)。大鼠在注射后 2 周和 12 周安乐死(每组 4 只)。通过组织学、组织化学、组织形态计量学和实时聚合酶链反应(qRT-PCR)分析对大鼠的颌下肌进行检查:结果:与对照组相比,BTX-A 组的组织病理学结果显示肌肉纤维萎缩,且萎缩程度随时间增加。与 BTX-A 组相比,BTX-A + 锌组的萎缩程度更严重。相反,与 BTX-A 组和 BTX-A + 锌组相比,BTX-A + 铜组的肌肉纤维组织形态有所改善。2 周和 12 周的 Masson 三色染色组织形态分析显示,BTX-A + 铜组和对照组的胶原面积百分比最高,其次是 BTX-A 组和 BTX-A + 锌组。12周时,与BTX-A +铜组相比,BTX-A +锌组和BTX-A组的核因子卡巴β(NF-κB)mRNA表达明显高于对照组:结论:补锌可明显提高 BTX-A 的有效性和持久性,而补铜会降低其有效性。
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Journal of Stomatology Oral and Maxillofacial Surgery
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